This could potentially cause performance problems with apps that were not built expecting this behavior. We want to stay away from features that are too magical. If anything I would make the behavior “opt in” by specifying some flag in the model like:
belongs_to :user, eager_load: true
Or as a separate method
eager_load_parent!
If this is a feature you would like, I suggest you turn it into a Gem and get real world usage and feedback from the community.
